diff --git a/test/test_heuristics.rb b/test/test_heuristics.rb
index 0883d7b7..2c78d87c 100644
--- a/test/test_heuristics.rb
+++ b/test/test_heuristics.rb
@@ -50,12 +50,6 @@ class TestHeuristcs < Test::Unit::TestCase
     })
   end
 
-  # Candidate languages = ["ECL", "Prolog"]
-  def test_ecl_prolog_by_heuristics
-    results = Heuristics.call(file_blob("Prolog/or-constraint.ecl"), [Language["ECL"], Language["Prolog"]])
-    assert_equal [Language["Prolog"]], results
-  end
-
   # Candidate languages = ["ECL", "Prolog"]
   def test_ecl_prolog_by_heuristics
     assert_heuristics({